
With continuous innovation, JAMA is in the leading position in the international chain sprocket market. The ball & roller bearings series is one of the main products of JAMA. JAMAball & roller bearings is fabricated meeting the production process standards. The neutral arch design of this product makes it fits most foot types and suitable for the majority of users.

our team regards 'The Best Service Enterprise of Global Professional chain sprocket' as its development vision. Get more info!